jar vs bump around

jar is a noun but bump around is not a noun.

Word	Noun	Adjective	Verb	Adverb
jar	Yes	No	Yes	No
bump around	No	No	Yes	No

As verbs, jar and bump around are synonyms defined as:

Other synonyms of jar include shake up.

jar (noun)	bump around (noun)
a cylindrical vessel, typically used for storing food
a sudden jarring impact
the quantity contained in a jar

jar (verb)	bump around (verb)
place in a cylindrical vessel	shock physically
affect in a disagreeable way
move or cause to move with a sudden jerky motion
shock physically
be incompatible; be or come into conflict